Abstract: Low oil prices forced shale oil and gas cost to decline sharply in a short period of time. This fact makes us realize that cost-effectiveness of oil and gas operation has been downplayed for a long time. The profit sourcing from high oil prices, to a large extent, has weakened the initiative for cost reduction by means of technological progress. From the angle an enterprise, the main factors influencing cost-effective objectives include corporate development strategy and collaboration for business management in addition to engineering services. Therefore, it is necessary to regard costeffectiveness as the fundamental principles of an enterprise, which should be implemented at various levels and in different links, thus strengthening collaborative innovation of the whole industrial chain and restructuring system at the industrial and State levels. In face of energy structural optimization and the new round of industrial and technological revolution at the present time, we should meet the new challenges on the basis of revolutionary innovation of oil and gas technology.

摘要： 为提高油井清蜡、水井解堵作业效率，大庆油田开展了连续管快速修井作业试验。利用水力清蜡除垢原理， 通过优化高压旋转射流水力参数、优选高压冲洗工具、合理匹配施工参数、配套地面流程，形成了连续管高效快速修 井作业工艺技术。现场应用及试验表明，连续管高效水力清蜡除垢解堵作业工艺具有带压、环保、高效等优势，可有 效实现油管、套管内清蜡除垢，施工时效较常规油管作业大幅提高，并可解决油管、套管堵塞等常规作业起管柱拔不 动以及修井因无油套循环通道导致无法压井作业等疑难特殊井施工难题，实现了作业模式新变革，为油田快速修井作 业提供借鉴。

关键词: 连续管, 高压旋转射流, 水力清蜡除垢, 快速修井, 带压作业